Thermostatic pole-changer.



No. 743,879. PATENTBD Nov. 10, 1903.

` J. P. JENSEN.

THERMOSTATIC POLE CHANGER.

APPLICATION FILED JAN. 22, 190s.

N0 MODEL.

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No. 743,879. Patented November 1o, 190s.

UNTTED STATES PATENT Grunn.

JENS PEDERSEN JENSEN, OF ESBJERG, DENMARK, ASSIGNOR TO THOMAS Y FEDER HANSEN.

THERMOSTATC FCJL-CHNGERc SPECIFCATION forming part of Letters atent No. 748,879, dated November 10, 1903.

Application led January 22,1903. Serial No. 140,120. (No model.)

To @ZZ whom it may concern: spring is thereby heated and nally bends Beitknownthatl,JENSPEDERSENJENSEN, in such a way that it touches the contactmanufacturer, of 37 Havnegade, Esbjerg, screw 17, as shown by the dotted lines. The Denmark, have invented certain new and current from the negative pole of the battery 5 useful Improvements in Thermostatic Pole- 12 then goes through wire 13, the contact- Changers, of which the following is a full, place 9, the current-shifter arm 6, wire 4:, clear, and exact specification. through the motor 2, wire 3, arm 7, contact- The purpose of my invention is to cause place 10, wire 19, contact-screw 17, spring 15 the sunbeams or the increase of temperature and wire 14 to the positive pole ofthe battery. 6o Io to influence an electric-contact arrangement This will cause the motor to rotate, and the in such a way that the direction of the curwire will be moved in the direction indicated rent in a motor is shifted by sunshine or by arrowl till the stop 20, affixed on the wire, shadow. Herebythe motor is turned,respec touches the current-shifter 5 and turns the tively, in the one or the other direction, and same to its opposite outer position. As long x5 this alternate movelnent is made use of in an as the sun shines the spring 15 will keep the appropriate manner. bent form and the contact-points at the screw My invention may be used in any relation 17 will be closed, but the current will neverwhere it may be desirable to have an electric theless be cut off ou account of the altered motor shift the position of curtains, sunposition of the current-shifter' 5. Nhen the 7c 2o shades, dto., by the automatic action of heat. sun ceases to shine, the spring 15 straightens The arrangement may be varied mechanitself again and forms contact with the screw ically in many different Ways in accordance 16. The current will then go the contrary with the manner in which it is applied. way through the motor, which will then draw In the accompanying drawing a sketch (inthe wire in the contrary direction ofthe arrow z5 dicating currents) of the invention is shown. l. The direction of the current is from the From the anchor 2 on the motor 1 a couple battery 12, through wire 13, arm 6, wire 18, of wires 3 and 4 lead to a current-shifter 5, screw 16, spring 15, and wire 14 back to the which is provided with a couple of arms (5 battery. and 7, which are isolated from each other It will easily be seen that the invention may 8c 3o and have contact with the contact-pieces S, be varied in many ways Without departing 9, and 10. On the axis of anchor 2 there is from the principles which are the basis of the a wire reel of wire on which the wire 11 is same. coiled. The current may be supplied either Having thus described my invention, what from a central electric station or from a batlclaim as new, and desire to secure by Letters 35 tery. On the drawing a battery 12 is indi- Patent, ism

cated, which, by a wire 13, is connected with 1. In an apparatus ot' the character dethe contact-piece 9. From the other pole of scribed, the combination of an electric motor the battery a wire 14 leads to a thermostat, provided with a revoluble member, a polewhich consists of aproperly-arranged spring changer having a movable member provided 9o 4o 15, which can make contact with one of the with holes, alongitudinal flexible member entwo contact-screws 16 and 17, which, by the gaging said revoluble member and threaded wires 18 and 19, are respectively connected through said holes, and stop members mount- With the contact-places 8 and 10. To 'the ed. upon said longitudinal flexible member Wire 11 a pair of stops 2O and 21 are afxed. and free to engage said movable member of 95 45 The current-shifter' 5 is a two-arm beam, said pole-changer.

which is balanced on the arm 22. The cur- 2. In an apparatus of the character derenteshifter is accordingly so affixed to the scribed, the combination of an electric motor, wire reel on the axis of the anchor 2 that the a pole-changer connected therewith for retwo stops act each on their respective arm of versing the same, said pole-changer having a roc 5o the current-shifter. rocking lever provided with holes, a pivot When the sun commences to shine, the connected with saidleverintermediateof said holes and upon which said lever rests, t revofree to engage seid levers for the purpose of luble member connected With seid electric reversing the same. 1o motor and free to move in two directions, a In Witness whereof I have hereunto set my cord connected with seid revoluble member hand.

and free to move in two directions correspond- JENS PEDERSEN JENSEN. ing; to those of the lever, said cord being Witnesses: threaded through said holes of said lever, and OTTO WIESEMANN,

Stop members mounted upon said cord and l PH. SOHERRER. 

